Steps to deploy Terraswap into LocalTerra and create a functional pair

localterra_terraswap.txt

# Clone the terraswap repo (optionally build the binaries yourself)
git clone https://github.com/terraswap/terraswap.git 
cd terraswap/artifacts

# Upload terraswap_token contract and note the code_id
terracli tx wasm store terraswap_token.wasm --from test1 --chain-id=localterra --gas=auto --fees=100000uluna --broadcast-mode=block
    > code_id: 2

# Upload terraswap_pair contract and note the code_id
terracli tx wasm store terraswap_pair.wasm  --from test1 --chain-id=localterra --gas=auto --fees=100000uluna --broadcast-mode=block
    > code_id: 3

# Upload terraswap_router contract and note the code_id
terracli tx wasm store terraswap_router.wasm  --from test1 --chain-id=localterra --gas=auto --fees=100000uluna --broadcast-mode=block
    > code_id: 4

# Upload terraswap_factory contract and note the code_id
terracli tx wasm store terraswap_factory.wasm --from test1 --chain-id=localterra --gas=auto --fees=100000uluna --broadcast-mode=block 
    > code_id: 5

# Instantiate new 'LocalTerra MIR' CW20 contract and mint 1,000,000 ltMIR to ourselves, note the contract_address
terracli tx wasm instantiate 2 '{"decimals": 6,"initial_balances":[{"address":"terra1dcegyrekltswvyy0xy69ydgxn9x8x32zdtapd8","amount":"1000000000000"}],"name":"LocalTerra Mirror","symbol":"ltMIR"}' --from test1 --chain-id=localterra --fees=10000uluna --gas=auto --broadcast-mode=block
    > contract_address: terra10pyejy66429refv3g35g2t7am0was7ya7kz2a4

# Check ltMIR token info:
terracli query wasm contract-store terra10pyejy66429refv3g35g2t7am0was7ya7kz2a4 '{"token_info":{}}'
    > {"name":"LocalTerra Mirror","symbol":"ltMIR","decimals":6,"total_supply":"1000000000000"}

# Instantiate new 'LocalTerra UST' CW20 contract and mint 5,000,000 ltUST to ourselves
terracli tx wasm instantiate 2 '{"decimals": 6,"initial_balances":[{"address":"terra1dcegyrekltswvyy0xy69ydgxn9x8x32zdtapd8","amount":"5000000000000"}],"name":"LocalTerra UST","symbol":"ltUST"}' --from test1 --chain-id=localterra --fees=10000uluna --gas=auto --broadcast-mode=block
    > contract_address: terra1sshdl5qajv0q0k6shlk8m9sd4lplpn6gggfr86

# Check ltUST token info:
terracli query wasm contract-store terra1sshdl5qajv0q0k6shlk8m9sd4lplpn6gggfr86 '{"token_info":{}}'
    > {"name":"LocalTerra UST","symbol":"ltUST","decimals":6,"total_supply":"5000000000000"}

# Instantiate Terraswap factory (using the correct code_id values for terraswap_pair and terraswap_token from above), note the contract_address
terracli tx wasm instantiate 5 '{"pair_code_id": 3,"token_code_id": 2}' --from test1 --chain-id=localterra --fees=10000uluna --gas=auto --broadcast-mode=block
    > contract_address: terra1plju286nnfj3z54wgcggd4enwaa9fgf5kgrgzl

# Check factory config
terracli query wasm contract-store terra1plju286nnfj3z54wgcggd4enwaa9fgf5kgrgzl '{"config":{}}'
    > {"owner":"terra1dcegyrekltswvyy0xy69ydgxn9x8x32zdtapd8","pair_code_id":3,"token_code_id":2}

# Create ltMIR-ltUST pair, note the contract address of the new pair / lp token
terracli tx wasm execute terra1plju286nnfj3z54wgcggd4enwaa9fgf5kgrgzl '{"create_pair":{"asset_infos":[{"token":{"contract_addr":"terra10pyejy66429refv3g35g2t7am0was7ya7kz2a4"}},{"token":{"contract_addr":"terra1sshdl5qajv0q0k6shlk8m9sd4lplpn6gggfr86"}}]}}' --from test1 --chain-id=localterra --fees=10000uluna --gas=auto --broadcast-mode=block
    > pair_contract_addr: terra17dkr9rnmtmu7x4azrpupukvur2crnptyfvsrvr
    > liquidity_token_addr: terra1gv07846a3867ezn3uqkk082c5ftke7hpemzu9q

# Approve (1) ltMIR (allow the pair created above to spend it)
terracli tx wasm execute terra10pyejy66429refv3g35g2t7am0was7ya7kz2a4 '{"increase_allowance":{"amount":"1000000","spender":"terra17dkr9rnmtmu7x4azrpupukvur2crnptyfvsrvr"}}' --from test1 --chain-id=localterra --fees=10000uluna --gas=auto --broadcast-mode=block

# Approve (5) ltUST (allow the pair created above to spend it)
terracli tx wasm execute terra1sshdl5qajv0q0k6shlk8m9sd4lplpn6gggfr86 '{"increase_allowance":{"amount":"5000000","spender":"terra17dkr9rnmtmu7x4azrpupukvur2crnptyfvsrvr"}}' --from test1 --chain-id=localterra --fees=10000uluna --gas=auto --broadcast-mode=block

# Provide 1 ltMIR and 5 ltUST liquidity to the pair
terracli tx wasm execute terra17dkr9rnmtmu7x4azrpupukvur2crnptyfvsrvr '{"provide_liquidity":{"assets":[{"info":{"token":{"contract_addr":"terra10pyejy66429refv3g35g2t7am0was7ya7kz2a4"}},"amount":"1000000"},{"info":{"token":{"contract_addr":"terra1sshdl5qajv0q0k6shlk8m9sd4lplpn6gggfr86"}},"amount":"5000000"}]}}' --from test1 --chain-id=localterra --fees=10000uluna --gas=auto --broadcast-mode=block 

# Check pool info
terracli query wasm contract-store terra17dkr9rnmtmu7x4azrpupukvur2crnptyfvsrvr '{"pool":{}}'
    > {"assets":[{"info":{"token":{"contract_addr":"terra10pyejy66429refv3g35g2t7am0was7ya7kz2a4"}},"amount":"1000000"},{"info":{"token":{"contract_addr":"terra1sshdl5qajv0q0k6shlk8m9sd4lplpn6gggfr86"}},"amount":"5000000"}],"total_share":"2236067"}